Lock.



W. MEIER.

LOCK.

APPLICATION FILED MAR. 29, 1913 Patented Mar. 24, 1914 INVENTOR WWW/22m Wafer BY ATTORNEYS COLUMBIA PLANOURAPN cm, wAsmmiTou. n. c.

UNITE WILLIAM MEIER, OF NEW YORK, N. Y.

LOCK.

Specification of Letters Patent.

Patented Mar. 24, 1914.

Application filed March 29, 1913. Serial No. 757,540.

To all whom it may concern Be it known that I. IVILLIAM MEIER, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact description.

This invention relates to looks and has reference more particularly to a device of this class, comprising a removable bolt adapted to secure in position a hasp used for fastening a door or the like, a movable member having means for holding the bolt in place, and key-controllable means for actuating the movable member, the movable member and the hasp being positioned at the same side of the door.

The invention also relates to the provision of an extensible bolt for use with a lock of the class described so that each lock can be adapted for doors or other closures of different thicknesses.

The object of the invention is to provide a simple, strong and durable lock for fastening doors, shutters and other closures, which can be inexpensively manufactured, which can be easily manipulated, which takes the place of the usual pad-lock or other device employed for fastening a hasp in position, which is so constructed that it is extremely difficultto effect an unauthorized opening of the closure, the use of which prevents the door or other closure from being sprung to one side and then opened and which affords practically no opportunity for the application of a jimmy or other tool, in effecting an unauthorized entry.

The invention consists in the construction and combination of parts to be more fully described hereinafter and particularly set forth in the claims.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views, and in which Figure 1 is av fragmentary front elevation of a pair of double doors having an embodiment of my invention applied thereto; Fig. 2 is a transverse section of the doors and the lock; Fig. 3 is a plan View of part of the lock having the casing cover removed; Fig. at s a vertical section on the line 4-4 of F g. 1; and Fig. 5 is a fragmentary longitudinal section of a bolt of modified form.

Before proceeding to a more detailed explanation of my invention, it should be understood that the present form of the device constitutes an improvement upon that disclosed 1n my United States Patent No. 981,453, dated January 10, 1911. In the device shown herein the arrangement is such that the hasp is on the same side of the door as the movable bolt-engaging and key-controllable member, that is at the inside of the door or other closure. Thus there appears at the outside of the door nothing more than the countersunk heads of the bolts which afford practically no opportunity for the application of a tool to effect an unauthorized opening of the door. It should also be remembered that the key-controllable means associated with the movable member which holds the bolt in place, may be of any suitable form, tho-ugh I have shown for example key-controllable mechanism forming part of what is generally known as a Yale paracentric lock.

Referring more particularly to the drawings, I have illustrated parts of a pair of double doors of customary construction. At the outside of one of the doors is mounted a face plate 11 of suitable size and form, having at the inner face a projection 12 received in a corresponding recess 13 of the door surface. The plate has a beveled opening 14: therethrough which registers with a bore 15 extending through the door itself. A keeper bolt 16 havinga beveled head 17 is positioned in the opening 14 and the bore 15 and likewise passes through an opening 18 of a face plate 19 secured in any convenient manner at the inside of the door. I employ a hasp 20 consisting preferably of a strong flat bar, which has at one end an opening 21 through which the reduced threaded extremity 22 of the keeper bolt 16 passes. The latter has a wing nut 23 which serves to securely hold the hasp in position. A cotter pin 24 or like device serves to prevent the accidental displacement of the wing nut should the same become loosened. The other door 10 has a face plate 25 similar to the element 11 and like the same provided with an extension 26 received in a recess 2-7 of the door surface. It has a beveled opening 28 which registers with a bore 29 of the door. The last-mentioned bore likewise registers with an opening 30 of an inner plate 31 mounted upon the back of the door and secured in position by means of screws 32 or in any other suitable manner. A look bolt 33 similar to the keeper bolt 16 is mounted in the openings 28 and 30 and the bore 33. Its inner threaded end 34 has adjustably mounted thereon a retaining nut 35 and a lock nut 36. The threaded extremity of the bolt passes through an opening 37 provided therefor near the end of the hasp 20.

I provide two vertically disposed substantially parallel guides 38 secured by means of rivets 39 or in any other suitable manner, upon the plate 31. These guides have offset flanges 40 in which is slidably received a U-shaped movable member or slide 41. The slide has at the upper end an extension 42 likewise of U-shape and adapted to be projected into operative relation with the lock bolt, the threaded end 34 of which is received between the sides of the extension 42. When the parts are so positioned the nuts 35 and 36 are at the outside of the extension 42, so that the bolt is securely held against withdrawal. Between guides 38 the plate 31 has an opening 43 in which is rotatably mounted a substantially cylindrical head 44, having for the purpose an annular groove 45 which receives the edge of the opening. The head 44 has two lateral extensions 46 and 47. constituting cam fingers, each adapted to engage respective studs 48 and 49, secured to one side ofthe slide, so that :s the members turn in one direction or the other, the head will be correspondingly actuated. The door 10 has a bore 50 in which is mounted a key-controllable mechanism 51, consisting for example of a Yale look. This has a face plate 52 provided with the usual keyhole, arranged in an opening 53 of the face plate 25 of the door. The key-controllable mechanism has a bar 54 operatively connected with the cylinder thereof and having the end received in a slot 55 of the head 44. Consequently when a key is inserted in the lock and turned in one direction or the other, the lock cylinder together with the bar 54 are likewise turned and this serves to rotate the head 44.

I provide a leaf spring 55 secured to the plate 31 by means of a screw 56 or any other suitable manner. The leaf spring has a rounded end 57 normally pressed against one of the sides of the member 41, the spring contacting with a lug 58 of the plate.

. The member'41 has two notches 59, each adapted to be engaged by the end '57 of the spring, the latter thus serving resiliently to hold the slidable member in its normal position or in its projected position. A casing cover 60 of suitable construction is mounted upon the plate 31 by means of screws 61 or the like and covers the lock mechanism previously described. It has at the upper end an opening 62 through which the extension 42 of the slidable member can be projected into operative relation with the lock bolt as is shown in Fig. 4.

In Fig. 5 I have shown a modified form of lock bolt. This comprises a bolt body 63 having a beveled head 64 and an internally threaded bore 65. In this is received the correspondingly threaded bolt extension 66, having at the outer end a head 67. By screwing the extension into the said bore 65, the effective length of the bolt can be varied as necessary. A set screw 68 serves to secure the parts in different relative adjustments.

While I have shown the lock used with double doors, it will be understood that it can also be employed with a single door or other closure. In that case one only of the bolts extends through the door, the other bolt extending through an adjacent part of the door frame or other structure associated with the door.

Having thus described my invention I claim as new and desire to secure by Letters Patent 1. In combination, a hasp, a bolt adapted to extend through a door and engage said hasp to secure the same in p1ace,a second bolt adapted to extend through a door and to engage the said hasp, and key-controllable mechanism for securing said second bolt against displacement, said hasp and said key-controllable mechanism being adapted to be arranged at the same side of the door.

2. In combination, a removable keeper bolt, a removable lock bolt, a hasp engaging said bolts, means for securing said keeper 7 bolt relative to said hasp, a U-shaped slide mounted adjacent to said hasp and engaging said lock bolt to secure the same relative to said hasp, and key-controllable mechanism for operating said slide engaging the slide in the U of the same.

3. In a lock of the class described, a slide U-shaped at both ends, means for guiding said slide, and a rotatable member having cam fingers positioned in one of the U ends of the slide, said slide having studs in said U end each adapted to be engaged by one of said fingers.

4. In a lock of the class described, a slide U-shaped at both ends, means for guiding said slide, a rotatable member in one of the U-shaped ends of the slide and having cam fingers, said slide having studs in said U end each adapted to be engaged by one of said name to this specification in the presence of fingers, and a spring engaging said slide and two subscribmg Witnesses.

tendin to hold the same a m-inst movement, I said slide having a plurality of notches in VILLIAM MEIER said U end of the slide adapted to be en- \Vitnesses: gaged by said spring. JOHN K. BRACHVOGEL,

In testimony whereof I have signed my PHILIP D. ROLLI-IAUS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0. 

